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utm-builder

Generates UTM-tagged URLs for campaign tracking. Use for creating tracking links, bulk UTM generation, or setting up campaign URL conventions.

Quality

79%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./skills/utm-builder/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

61%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body delivers executable, copy-paste-ready generation code and genuinely useful domain conventions, but is held back by an embedded promotional footer, a validation capability with no executable implementation, and no verification checkpoint in the bulk-generation workflow. Structure and organization are solid for a single-file skill.

Suggestions

Remove or relocate the "About this skill" promotional footer — it consumes context tokens without contributing to task execution.

Add an executable validation step to the bulk-generation workflow (e.g., a check function run on every generated URL with a fix-and-retry loop), which would also resolve the workflow-clarity cap for batch operations.

Provide code for the advertised "UTM Validation" capability instead of prose-only rules, so all four listed capabilities have executable guidance.

DimensionReasoningScore

Conciseness

The code and convention tables are efficient, but the ~10-line "About this skill" promotional footer is pure padding and some best-practice items (e.g., "GA is case-sensitive; 'Google' ≠ 'google'") restate what Claude already knows. This fits 'mostly efficient with some unnecessary explanation' better than the minor-trimming of anchor 4.

3 / 5

Actionability

`build_utm_url` and `generate_campaign_urls` are complete, executable stdlib Python and the naming tables are concrete, but the advertised "UTM Validation" capability has only prose rules with no executable validator — a minor gap keeping it below fully copy-paste-ready coverage.

4 / 5

Workflow Clarity

Bulk generation is a batch operation, yet verification appears only as a best-practice bullet ("Test tracking - Verify URLs work before launching") with no concrete validation checkpoint or feedback loop in the generation sequence; per the rubric cap, a batch workflow without validation steps cannot score above 3.

3 / 5

Progressive Disclosure

The ~155-line body is well organized into clear sections (Quick Usage, Bulk Generation, Naming Conventions, Validation Rules, GA Integration, Best Practices) with appropriately inline content for a skill this size, though the naming tables and GA4 mapping could move to a reference file and the promo footer is misplaced.

4 / 5

Total

14

/

20

Passed

Description

87%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong description: third-person, concise, with an explicit 'Use for' trigger clause covering concrete scenarios. Its only weakness is modest coverage — the validation capability and a few natural synonyms (e.g., "UTM parameters") are absent.

DimensionReasoningScore

Specificity

Lists several concrete actions — "Generates UTM-tagged URLs", "bulk UTM generation", "setting up campaign URL conventions" — but omits the URL-validation capability covered in the body, leaving minor gaps rather than comprehensive coverage.

4 / 5

Completeness

Clearly answers 'what' ("Generates UTM-tagged URLs for campaign tracking") and 'when' with an explicit trigger clause naming concrete scenarios ("Use for creating tracking links, bulk UTM generation, or setting up campaign URL conventions"), matching the top anchor; the 'when' clause needs no added specificity.

5 / 5

Trigger Term Quality

Natural phrases like "tracking links", "UTM", and "bulk UTM generation" match what users would say, but common synonyms such as "UTM parameters" or "tag URLs" are missing, so coverage is good rather than comprehensive.

4 / 5

Distinctiveness Conflict Risk

"UTM-tagged URLs" and "campaign tracking" define a clear niche with distinctive trigger terms and minimal overlap risk with adjacent analytics or link-management skills.

5 / 5

Total

18

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

Synter-Media-AI/free-skills

Path

skills/utm-builder/SKILL.md

Reviewed

Table of Contents

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